Dentsing 11.1V 85Wh FK890 Battery for Dell Battery Inspiron 1520, 1521, 1720, 1721 / VOSTRO 1500, 1700 FK890 85Wh 9-CELL Laptop NR222, NR239, KG479, 0FK890 0NR222, 0NR239, 0KG479 Model: FK890 Color:Black Voltage:11.1V Capacity:85WH Compatible P/N:312-0513, 312-0518, 312-0518, 312-0518, 312-0589, NR222, NR239, KG479, 0FK890 0NR222, 0NR239, 0KG479 Compatible with:Dell Inspiron 1520, 1521, 1720, 1721 / VOSTRO 1500, 1700 FK890 6 Months Warranty. If you have any issue, please contact us, we will help you resolve it before you leave a negative feedback or low review.Thanks for your kind support and patience.